Home / 3,037.86-4,190.40-1,917.90

Finding the Fourth Proportional to 3,037.86, 4,190.40 and 1,917.90

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Solution

The fourth proportional to 3,037.86, 4,190.40 and 1,917.90 is: 2,645.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,037.86 : 4,190.40 = 1,917.90 : x
  2. Step 2: Convert to fraction form
    3,037.86/4,190.40 = 1,917.90/x
  3. Step 3: Cross multiply
    3,037.86x = 4,190.40 × 1,917.90
  4. Step 4: Simplify right side
    3,037.86x = 8,036,768.16
  5. Step 5: Solve for x
    x = 8,036,768.16/3,037.86
  6. Step 6: Final answer
    x = 2,645.54

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.